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RDS Weighlog 2 User Manual

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Electro-Magnetic Compatibility (EMC)
This product complies with Council Directive
89/336/EEC when installed and used in accordance
Service and Technical Support
PLEASE CONTACT YOUR LOCAL DISTRIBUTOR
If unknown then fax: 44 (0) 1453 733311
© Copyright RDS Technology Ltd 2001
Our policy is one of continuous improvement and
the information in this document is subject to
change without notice. Check that the software
reference matches that displayed by the instrument.
S/DC/500-10-082 : Issue 4 : 12/7/01
Weighing System
with the relevant instructions.
Document number
\UK082-4.DTP
User Guide
Weighlog 2
Installation
1

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Summary of Contents for RDS Weighlog 2

  • Page 1 Service and Technical Support PLEASE CONTACT YOUR LOCAL DISTRIBUTOR If unknown then fax: 44 (0) 1453 733311 © Copyright RDS Technology Ltd 2001 Our policy is one of continuous improvement and the information in this document is subject to change without notice. Check that the software reference matches that displayed by the instrument.

  • Page 2: Table Of Contents

    Contents 1. Overview _______________________________ 2. Installation _______________________________ Important Safety Precautions - 5 *Load (Pressure) Sensor - 6 Reference and Direction Sensor - 10 Remote Enter Switch - 13 Head Unit - 14 Power Supply - 16 External Alarm - 19 Testing the System - 20 *Separate instructions are provided in the case of Strain Sensor installation.

  • Page 3: Overview

    Overview The Weighlog 2 is intended for use on skid-steer loaders, utility tractors with a loader attachment, wheel loaders, backhoe loaders (loader side only), and gas powered fork lifts. It measures, displays and records the net weight lifted, normally based on sensing the lift system hydraulic pressure.
  • Page 4 Overview The Weighlog system is made up of a number of standard kits, which are designed to fit a wide range of loaders. Mounting positions will vary ac- cording to the type of machine, however this manual gives general guidelines that apply equally to any machine.

  • Page 5: Installation

    Installation Important safety precautions ! In addition to observing site safety requirements, before working on the machine always :- Make sure that the bucket is down on the floor and all pressure is released from the hydraulic system, before slackening off any hydraulic coupling.

  • Page 6: Load (Pressure) Sensor

    Installation Load sensor The load sensor (fig. 2) is connected via a flexible hose into the pressure side of the hydraulic circuit, using a tee adaptor fitting. Depending on the machine, you may be using a threaded teepiece, SAE flange coupling, or if there is no suitable coupling you may have to drill and tap into a suitable point.
  • Page 7 Installation SAE Flange Coupling Fit the 1/8" BSP - 1/4" BSP Adaptor Fig. 3 and Dowty seal to one of the two 1/8" BSP ports on the flange. Fit the blanking plug with Dowty seal to the remaining 1/8" BSP port (fig. 3). Slacken and remove the four flange fixing bolts and split the coupling.
  • Page 8 Installation Threaded tees BSP, JIC or Metric sizes are available. Fig. 5 Tapped port In cases where there is no suitable coupling, you must drill and tap a 1/8" BSP port into a convenient pipe block. If possible remove the component to be drilled.
  • Page 9 Installation Load Sensor mounting Fig. 6b Connect the hydraulic hose to the tee fitting and route the hose towards the back of the loader frame. Connect to the load sensor and mount the sensor in a well protected position where it can be easily reached for servicing.

  • Page 10: Reference And Direction Sensor

    Installation Reference / Direction sensor First establish with the operator the most convenient weighing position to suit the loading operation. The sensor and magnet must be arranged so that the magnet is opposite the sensor face at the weighing position (fig 10). The sensor cables are tagged to identify the sensors - 'R' for the >...
  • Page 11 Installation Mark the hole positions. Drill and tap 2 holes M8 to attach the sensor bracket, and 2 holes M6 in the lift arm for the magnet bracket*. In some cases the magnet can be mounted directly onto the lift arm but you must fit a fibre washer between the magnet and the arm.
  • Page 12 Installation The whole assembly can then be bolted to the Angle Bracket at the suitable angle for the specific installa- tion, using the two M6 x 16mm bolts and nuts provided. Install the angle bracket as shown in figure 14. Fig.

  • Page 13: Remote Enter Switch

    Installation Remote Enter Switch Mount the Remote Enter Switch either Fig. 16 on the lift lever using a hose clip, or where it is easily accessible next to the lift lever (fig. 16). Route the cable back to the Harting connectors.

  • Page 14: Head Unit

    Installation Head Unit Confirm with the machine operator on where to mount the head unit in the cab. The head unit must not restrict the view out of the cab, nor impede the use of the controls. The head unit is fitted with a 1 metre flying lead terminating with a blue "Harting"...
  • Page 15 Installation Fix the mounting plate to the cab with the self tapping screws provided (drill size - 5/64") (fig. 21). Do not drill into a ROPS or FOPS frame. If you are fixing the mounting plate to plastic e.g. the dashboard or other cab moulding, it is recommended to screws with...

  • Page 16: Power Supply

    Installation Power Supply The instrument head unit can operate from a supply voltage of 10 - 30 V DC. The instrument normally operates from a 12V supply. The head unit does not have an integral On-Off switch, and is normally powered on via the ignition circuit.
  • Page 17 Installation Fusebox Brown Ignition Switch Blue Fig. 25 12V Power Supply Connect the in-line fuse to the brown wire of the power supply lead using the male and female crimp provided. Connect the 0V ring terminal to the bodywork/chassis. Ensure connection onto bare metal and that the connec- tion point gives a good grounding path to the battery.
  • Page 18 Installation 24V Systems Kit Ref: K/INST/24V The latest UDM-J type head unit operates from 10 - 30V DC, as do the sensors, therefore a 24V-12V voltage dropper is not required. Earlier head units require the voltage dropper. The wiring scheme is shown below for reference to older installa- tions.

  • Page 19: External Alarm

    Installation External Alarm An external alarm is optional. Mount the alarm buzzer where it will stay dry. Connect to the BLUE Harting connec- tor as follows; Colour F unction Terminal # Fig. 27 External Alarm Connection Blue BLUE 3 Brown BLUE 5 Brown +V Blue - 0V...

  • Page 20: Testing The System

    Installation Testing the System Switch the power on. The alarm should beep once and the display will come on. Lift the bucket up to the weighing position. The alarm should beep once. The display should indicate a number which is meaningless until the system is calibrated.
  • Page 21 Notes Issue 2b: 2 8/4/97 Correction to wiring diagram Correction to Parts diagram Issue 3: 1 2/8/97 Ref/Dir. Sensor and Magnet position revised Issue 4: 1 2/7/01 Needle valve discontinued. New Load Sensor and Ref/Dir Sensor kit.

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